Box piling



A. BORBERG May 28, 1935.

BOX PILING Filed Jan. 5, 1934 INVENTOR MM. (Balm,

Patented May 28, 1935 PATENT OFFICE BOX' PILING Adolf Borberg, Short Hills, N. J., assignor to Dortmund, Hoerder Huettenverein Aktiengesellschaft, Dortmund, Germany, a corporation of Germany Application January 5, 1934, Serial No. 705,363

Claims.1 (Cl. 61--61).

T This invention relates in general to boxlpiling of the sheet metal type, and involves in principle the formation of box piling units from pairs of standard arched web half wave sheet ,5 metal :piling of the interlock type.

In the, formation of the box piling, in accordance withwthis invention, various well-known types and depths of such arched or deep arched web sections maybe employed, and the term .arched is to be.understood as embracing all of these. The sections of each pair comprising a unit may be of equal or of unequal depths,

Several examples of the principle involved,

and the method of joining a number of such box piles to form a wall, bulkhead .or other structure, areshown in the accompanying'drawing, in which V Figural is a cross-section of three units of box piling constructed from pairs of standard deep arched double interlock piling of unequal depths of arch.

a Figure 2 is a similar view illustrating the joining of two such box piling units by one or more deep arch piles.

Figure 3 is a similar view showing the construction of two box pile sections of equal depth of arch'with an intervening connecting box pile constructed of standard sections of unequal depths of arch. 40 Figure 4 is a similar view of two box pile units constructed of two standard deep arched pile sections of equal depth, the two box units being joined by, for example, one intervening deep .arch pile of greater depth; and I Figure 5 is a similar view of two box pile units constructed of pile sections of equal depth of arch and the connection of the two box units flanges the interlock guard members l3, H extending along the respective edges of the section and adjacent theretojthe interlock hook members I5, 16. The shallow arched web section comprises the web portion H, the flanges l8, l9, and immediately adjacent to said flanges the interlock guard members 20, 2| and the interlock hook members 22, 23. Three such box units connected together are illustrated in Figure 1, whereas inFigure 2 I have shown by way of example two such box members connected together by an intervening deep arch section having a web portion 24, flanges 25, 26, interlock guard members 21, 28 extending along the respective edges thereof and adjacent thereto the interlockhook members 29, 30. The box sections are illustrated as rigidly andpermanently secured together by lines of welding a, bywhich are intended to represent any suitable type of connection by which the two members of the pair are to all intents and purpose converted into an inseparable unit which maybe driven and pulled as a single pile. It is contemplated that the joining of the two members of the pair may be effected atany time prior to driving, either on the job or prior to delivery at the job.

The distinction of this form of box pile-eand the other forms shown and to be described later-over the prior art suggestions of forming box pilesis that only, adjacent half wave secsuch as for instance the half wave sections ID, ID, l0 in Fig. 1, being interlocked at l5 and [6. Besides, each arched web section which is paired with and rigidly attached to another arched section (for instance I0 and I1) is so attached entirely independent from the interlock elements of the next adjoining box pile sections. Furthermore, these rigidly secured edges of each box pile are transversely displaced from the axis on which the box pile interlocks with an adjacentpile, and also from the neutral axis of the wall. For instance, inFignl the two:rigid joints a'are displaced transversely from the axis which runs through the interlocked elements l5, I5 and I6, lliand they are also displaced transversely from theneutral axis of the wall which runs in that case nearly midway between the joints a. A similar condition exists in the other modifications, to be described later. The result of this arrangement isthat the connection between two box piles is greatly strengthened .by the transversely superposed or adjacent interlock members, which extend substantial distances to either side of the neutral wall axis tions are interlocked by their interlock elements,

and hence give rise to a greatly increased wall section modulus at the joints between the boxes.

The interlocks illustrated are intended to be conventional and to represent any standard form. In the'same way the piling sections employed are of standard half wave construction,

- so that the expense of special rolling is avoided,

and the box units may be connected with any of the stock or standard units of similar type of interlock and suitable dimensions. units shown in Figure l are of the same over-all depth, the intermediate unit being reversed with respect to the two outer units so as to maintain the two wall faces in substantial, alignment. The same box units are illustrated "in Figure 2, and interconnected by a deep arched web section of the same depth as the deep arched web section employed in the construction of the box units, whereby the continuity of the'wall line is substantially maintained on one side only. Any of the units may obviously be of any desired width within-the standard stock dimensions i of such 5 sheet metal piling.

in connection with Figures 1 and 2, are employed for each of the two outer box units and similarly joined permanently together, but in this example the two deep arched sections are of equal depth.

Where it is desired to'maintain wall face align- 'm'ent, these box units may be connected by a 34 is much more shallow than sections 5i and 32, as-a result of which the wall line on either 'faceis substantially maintained. In Figure 4 the construction and arrangement are the same,

fwith the-"exception that the deep arched web section 33 is in this insta-nce not joined to a shallow arched web section 34, to form a box,

so that the wall line is more or less maintained on one face but interrupted, on the other.

, A still further example of connecting the box piles by intervening standard units is illustrated in Figure 5, in which the box pile units composed of thedeep arched sections 3!, '32, permanently joined as" previously described, are shown connected by the intervening straightweb section 3 5, it being understood that in this instance two such straight web sections 35 may be interposed between'the two box sections as two pairs of hook members are available. Furthermore, straight web sections, such as illustrated at may obviously be employed to connect box type units, whether-the sections of which such units areconstructed are of equal depth, or of unequal depthssuch as illustrated, for example, in Fig- -ures 1, 2 and 3.

The examples chosen for illustration are intended merely to'suggest some of the many ways in which box piles-of this type and construction may be joined with each other or with other types of pile sections. Furthermore, a straight web section'rnay be substituted for one of the two arched web-sections in the construction of a box pile unit under the principle'set forth, but

while such a construction may beregarded as an equivalent construction within the broad scopeof the invention herein claimed, its occur- The three,

of its edges an interlock member, the pile sections of each pair being rigidly secured together along their edges with their concave faces inward and the two edges of one section adjacent the two edges of the other section to form a box, said series of box pile units being interconnected with their deeper arched sections alternately disposed with respect to the series axis.

2. A box pile wall composed'ofv a plurality ofinterlocked box piles, each pile comprising a pair of' half-wave arched web pile sections, each section having along each of its edges an interlock member, said pair of .pile. sections be- 7 ing rigidly secured together along their interlock members with their concave web faces inward to form a box pile, adjacent box piles having their respective rigidly secured edges transversely spaced from the interlock axis and the neutral axis of the wall.

3. A box pile wall'composed of a plurality of interlocked box piles, each pile comprising a pair of half-wave arched web pile sections, each section having along each of its edges an interlock member, said pair of pile sections being of unequal depth and being rigidly secured together along their interlock members with their concave web faces inward to form a box pile, adjacent box piles having their respective rigidly secured edges transversely'spaced from the interlock axis and the neutral axis of the wall.

i. A box pile wall composed of a plurality of interlocked box piles, each plle' comprising a pair of half-wave arched web pile sections, each section having along'each of its edges an interlock member, said pair of pile sections being of equal depth and being rigidly secured together along their interlock members with their concave web faces inward to form a box pile, ad-

jacent box piles having their respective rigidly secured edges transversely spaced from the interlock axis and the neutral axis of the wall.

5. A box pile wall composed of a plurality of interlocked box piles, each pile comprising a pair of half-wave arched web pile sections, each section having along each of its edges an interlock 'member, said pair of pile sections being rigidly secured together along their interlock memberswith'their concave web faces inward to form'a box pile, adjacent box piles having theirrespective rigidly secured edges transversely spaced from the interlock axis arid the neutral axis of the wall, some of said box piles being composed of arched web pile sections of equal depth and some being composed of arched web sections of greater and less depth than said equal depth sections, those of one type alternating with those of the other type.

ADOLF BORBERG. T 

